Clock hand removing tool



.May 17, 1949. w.- M. TENER 2,470,327

CLOCK HAND REMOVING TOOL Filed Feb. 8, 1946 INVENTOR. WALLIS M. TENER Patented May 17, 1949 2370,32? oLo GK: HAMmREMomNotTooL;

wants Tenor, Lancaster; Pa: ApplicatiomFcbruam. s, 1946;;serialtNoamfidtfige 2"Cla'ims. (01. 29-232) This invention:v relates t to a .toolfor removing frictional. held hands of-.. recording instruments suchlas clockawatches-orzthe-like,

The objects of the invention is tot provide".- a tool whichtwill. remove, the handfrom-the; arbor without. injuring-gthehandtor arbor,v or: the dial which-generally lies, in type of, instrument, directlynnder the-hand;

A;=-further iobj ectof itheeinvention' is to provide a tool for removing frictional held hands from shaft in whichthe'handengaging jaws are automatically self adjusting to the diameter of the shaft on which'"the-- hands are mounted.

A still further object of the present invention is to provideatom 'which' 'can 'be manipulated with onehand to accomplish the desired purpose of removing the hand of a recording instrument.

A sti-lifurther object'of'the invention .is to; provide a plier iike tool-which with one operation angages the mainzstafi on arbor ofra recording instrument and the hand or indicating finger. mounted" on ,the arbor, and exerts a force against the-arbor-and simultaneously pull's upward on the hand or pointer to remove the same from the arbor.

A still further object of the present invention is to provide a plier-like tool having a gripping element carried on one of the jaws of the tool, and means actuated by the other jaw of the tool to operate said gripping element.

With the foregoing and other objects in view, the invention resides in the novel arrangement and combination of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein described may be made within the scope of what is claimed without departin from the spirit of the invention.

The invention is shown in the accompanying drawing in which Figure 1 is a prospective view of the tool.

Figure 2 is a sectional view of the lower part of the tool showing the dial of the recording instrument and the hand, with the tool in the open position.

Figure 3 is a view similar to Figure 2 showing the tool in the closed position, but previous to the removing or the hand.

Figure 4 is a view showing the hand removed.

Referring particularly to Figure 1, the tool is formed plier fashion having hand grips l and 2, and jaws 3 and 4. The two sections are pivotally mounted on pin 5 and have a spring member 6 contacting the hand member 2 at I, and the hand memberd at.8 ,totnormallyliorcethese-members apart; Thetotherhendllll oft the spring. member is coiled around the gripping-. members. andhseryes to. return the coil spring, to its. uppermost. .posi tion,. to'b'eexplained in detaillater.

secured. to thennderside soft and f orming part of'the lower jaw.3ds ablock 11 .(Figure 2) .Shd-v abl'y mounted intsaid blockland lower jaw is a pin, I51

Riveted .to, the upper ,end or pin 4. 5,. asat. I 4, is a yokemember l 0;,the free ends ofwhiehstrad-J dl'efl the lower jaw; and Iarecurved, as, at. I I and ,'1te. receive the uppermostcoil'of a 1 coil spring l3." The ends-fl andfIZ'are bent. around the coil and supportthe-snririg in position about the. block l'lz] Thespring; yoke and binareslidably carried bythelower jaw .3'.

Agtpairl of.spring rmembers I8I'and I 9 are se-v cure'dat their upper endto opposite sides ofthe' block"- l1: The lower ends of Said springmembers, which by their inherent spring nature are normally "urged" apart," carryj'hand engaging. jaws 20 and'2l.

The gripping jaws 20 and 2| are grooved at 22 and 23 to receive the pin 15 and serve as a continued guide of the pin during the hand removin operation. The jaws at their lower extremities are formed with hand gripping claws 24 and 25 notched, as at '26, so that they may slide under the hands to be removed and securely grip the same.

The coil spring l3 secured to the lower ends of the yoke member It] extends downward and encloses the upper end of the gripping jaws 20 and 2|, when the tool is in an open position. A slide strip 21 extends from the lower to the upper end of the spring to provide a sliding surface for the spring members l8 and I9 carrying the jaws 20 and 2|.

In using the hand tool, it is only necessary to utilize one hand during the removing operation, the other hand being free to hold the clock or instrument, or to receive the hands immediately upon the removal from the arbor. The tool is lowered in its open position, as shown in Figure 3, to a point just above the dial 3!], and with the claw ends 24 and 25 just below the hand 29. A squeezing action on the handle members I and 2 brings the jaw 4 into contact with the top of the yoke member ID and forces the pin l5 down through its slide 11, and into engagement with the arbor 28 of the instrument, as shown in Figure 3. Simultaneously with the movement of the pin I5 downward, the yoke I0 and the spring 13 are also moved downward, the lowermost coil of said spring engaging the outer sides of the gripping jaws bringing them together, as shown in Figure 3. This takes up about twothirds of the movement of the jaws 3 and 4 toward each other and further movement causes the gripping members 20 and 2| to move upward as downward movement of the pin I5 is prevented by contact with the arbor 30, this upward movement bringing the hand 29 01f of the arbor 30.

It is to be noted that at no time during the operation has there been any contact with the dial 28 of the instrument, the reaction being directed against the arbor 30 on which the hands are mounted. This provides a sure even pull with the forces directed against the two members which are in frictional contact, the one with the other, and efficiently removes the hands without a possibility of injuring the dial face.

What is claimed is:

1. A tool for removing frictional held hands from shafts comprising a pair of manually operable pivoted levers terminating in hand grips at one end and jaws at the other end, spring means for normally forcing said jaws apart, a block secured to the lower of said jaws and formed with a central bore, a pin slidably mounted in the bore of said block, a yoke secured at a central portion to the upper end of said pin and extending downward on each side thereof, a pair of spring strips secured to opposite sides of said block and projecting downwardly therefrom, a coil spring depending from and secured to said yoke, the lower coil of said spring engaging the spring strips, a

pair of hand gripping jaws of wedge shape formation secured to said spring strips, said hand gripf.-

and its hand gripping jaws upwardly while the upper jaw presses the yoke, the pin and the coil spring downwardly.

2. A tool for removing frictional held hands from shafts comprising a pair of manually operable pivoted levers terminating in hand grips at one end and jaws at the other end, spring means for normally forcing said jaws apart, a block secured to the lower of said jaws, a, pin slidably mounted in said block, a yoke secured at its central portion to the upper end of said pin and extending downward on each side thereof, said yoke being in alinement with and actuated by the upper jaw, a coil spring secured at its upper end to the downwardly extending portions of said yoke nd enclosing said block, a pair of spring strips secured to opposite sides of said block and bearing against the inner side of said coil spring and constructed to be contracted by the movement of said coil spring under the influence of said yoke, a pair of hand gripping jaws carried by the lower ends of said spring strips, each of said handgripping jaws being formed with a semicircular groove receiving and guiding said pin whereby the movement of said lever jaws together will urge said handgripping jaws toward each other and at the same time move said pin and said handgripping jaws in opposite direction. WALLIS MACDONNELL TENER.

REFERENCES CITED The following references are of record in the file of this patent:

UNI 1 ED STATES PATENTS Number Name Date 2,271,945 Meinhardt Feb. 3, 1942 2,349,497 Gustafson May 23, 1944 FOREIGN PATENTS Number Country Date 683,072 France Feb. 24, 1930 

